We booked a guaranteed on the Golden a few months ago and got about a 5 level upgrade, but still an outside cabin on the Plaza deck. What the upgrade amounted to: no obstructed view , good location and nice cabin. We hoped for something a little better, but we can't complain. We have booked guaranteed many times and never gotten anything wondeful but i have had clients that have gone from inside to deluxe outside or outside to mini suite. If you are a gambler and can live with any locaation on the ship go for it. If you are not going to be satisfied if you end up aft or forward book a cabin selection.
ncl, carnival, HAL, Costa, RCI, commodore,chamdres,celebrity,Princess